Sentetsu Sorii-class locomotives

Chosen Government Railway Sorii class (ソリイ) Korean National Railroad Sori1 class (소리1)
One of Sentetsu's Sorii-class locomotives, prior to 1938.
Type and origin Power type Steam Builder Baldwin Build date 1894 Total produced 6
Specifications Configuration: ​  • Whyte 2-8-0 Gauge 1,435 mm (4 ft 8+1⁄2 in) Driver dia. 1,370 mm (54 in) Length 17,991 mm (708.3 in) Width 2,960 mm (117 in) Height 4,570 mm (180 in) Loco weight 66.60 t (65.55 long tons; 73.41 short tons) Tender weight 44.46 t (43.76 long tons; 49.01 short tons) Fuel type Coal Fuel capacity 7.3 t (7.2 long tons; 8.0 short tons) Water cap. 15.1 m3 (530 cu ft) Firebox: ​  • Grate area 4.05 m2 (43.6 sq ft) Boiler: ​  • Small tubes 248 x 51 mm (2.0 in) Boiler pressure 12.6 kgf/cm2 (179 psi) Heating surface: ​  • Firebox 14.90 m2 (160.4 sq ft)  • Tubes 157.30 m2 (1,693.2 sq ft)  • Total surface 182.20 m2 (1,961.2 sq ft) Cylinder size 508 mm × 660 mm (20.0 in × 26.0 in) Valve gear Stephenson
Performance figures Maximum speed 70 km/h (43 mph) Tractive effort 13,300 kgf (130,000 N; 29,000 lbf)
Career Operators Chosen Government Railway Korean National Railroad Class ソリイ (Sentetsu) 소리1 (KNR) Number in class 6 Numbers ソリイ1–ソリイ6 (Sentetsu) 소리1-1–소리1-6 (KNR) Delivered 1904

The Sorii class (ソリイ) was a class of steam tender locomotives of the Chosen Government Railway (Sentetsu) with 2-8-0 wheel arrangement.^[1] The "Sori" name came from the American naming system for steam locomotives, under which locomotives with 2-8-0 wheel arrangement were called "Consolidation".^[2]

Built by the Baldwin Locomotive Works of the United States in 1894, the ソリイ (Sorii) class locomotives were bought second-hand by the Imperial Japanese Army for use by the Temporary Military Railway in Korea.^[1] In 1906, the Temporary Military Railway was taken over the Government-General of Korea to create the National Railway, which became Sentetsu in 1910. First numbered 101–106, they became numbers 1001–1006 in 1918, and finally in Sentetsu's 1938 general renumbering, they were given the numbers ソリイ1 through ソリイ6.^[3]

After the partition of Korea, all six remained in the South, becoming Korean National Railroad class Sori1 (소리1),^[1] numbered 소리1-1 through 소리1-6.^[3]